This implementation of the energymon interface reads from an ODROID Smart Power 3 USB device.

NOTE: If you're using an older generation ODROID Smart Power device, use the osp or osp-polling implementation instead.

You need an ODROID Smart Power 3 device with a USB connection.

This implementation depends on osp3.

By default, the osp3 implementation looks for an ODROID Smart Power 3 device at /dev/ttyUSB0. To override, set the environment variable ENERGYMON_OSP3_DEV_FILE to the correct device file.

OSP3 devices support various baud rates: 9600, 19200, 38400, 57600, 115200 (default), 230400, 460800, 500000, 576000, and 921600. To override, set the environment variable ENERGYMON_OSP3_BAUD to the device's configured baud.

There are three distinct power sources that can be monitored: channel 0 (default), channel 1, and the input power. To configure the power source, set the environment variable ENERGYMON_OSP3_POWER_SOURCE to either 0, 1, or IN.

OSP3 devices can be configured to refresh anywhere between every 5 ms and 1 sec, depending on the configured baud. The osp3 implementation will automatically handle different update intervals.